X-Git-Url: https://git.saurik.com/apple/javascriptcore.git/blobdiff_plain/9dae56ea45a0f5f8136a5c93d6f3a7f99399ca73..4be4e30906bcb8ee30b4d189205cb70bad6707ce:/runtime/JSGlobalObject.cpp

diff --git a/runtime/JSGlobalObject.cpp b/runtime/JSGlobalObject.cpp
index eb2b349..7f3fa2a 100644
--- a/runtime/JSGlobalObject.cpp
+++ b/runtime/JSGlobalObject.cpp
@@ -30,162 +30,164 @@
 #include "config.h"
 #include "JSGlobalObject.h"
 
-#include "JSCallbackConstructor.h"
-#include "JSCallbackFunction.h"
-#include "JSCallbackObject.h"
-
 #include "Arguments.h"
 #include "ArrayConstructor.h"
 #include "ArrayPrototype.h"
 #include "BooleanConstructor.h"
 #include "BooleanPrototype.h"
 #include "CodeBlock.h"
+#include "CodeCache.h"
 #include "DateConstructor.h"
 #include "DatePrototype.h"
+#include "Debugger.h"
+#include "Error.h"
 #include "ErrorConstructor.h"
 #include "ErrorPrototype.h"
 #include "FunctionConstructor.h"
 #include "FunctionPrototype.h"
-#include "GlobalEvalFunction.h"
+#include "GetterSetter.h"
+#include "Interpreter.h"
+#include "JSAPIWrapperObject.h"
+#include "JSActivation.h"
+#include "JSBoundFunction.h"
+#include "JSCallbackConstructor.h"
+#include "JSCallbackFunction.h"
+#include "JSCallbackObject.h"
+#include "JSFunction.h"
 #include "JSGlobalObjectFunctions.h"
 #include "JSLock.h"
-#include "Interpreter.h"
+#include "JSNameScope.h"
+#include "JSONObject.h"
+#include "JSWithScope.h"
+#include "LegacyProfiler.h"
+#include "Lookup.h"
 #include "MathObject.h"
+#include "NameConstructor.h"
+#include "NameInstance.h"
+#include "NamePrototype.h"
 #include "NativeErrorConstructor.h"
 #include "NativeErrorPrototype.h"
 #include "NumberConstructor.h"
 #include "NumberPrototype.h"
+#include "ObjCCallbackFunction.h"
 #include "ObjectConstructor.h"
 #include "ObjectPrototype.h"
-#include "Profiler.h"
-#include "PrototypeFunction.h"
+#include "Operations.h"
+#include "ParserError.h"
 #include "RegExpConstructor.h"
 #include "RegExpMatchesArray.h"
 #include "RegExpObject.h"
 #include "RegExpPrototype.h"
-#include "ScopeChainMark.h"
+#include "StrictEvalActivation.h"
 #include "StringConstructor.h"
 #include "StringPrototype.h"
-#include "Debugger.h"
-
-namespace JSC {
 
-ASSERT_CLASS_FITS_IN_CELL(JSGlobalObject);
+#include "JSGlobalObject.lut.h"
 
-// Default number of ticks before a timeout check should be done.
-static const int initialTickCountThreshold = 255;
-
-// Preferred number of milliseconds between each timeout check
-static const int preferredScriptCheckTimeInterval = 1000;
+namespace JSC {
 
-static inline void markIfNeeded(JSValuePtr v)
-{
-    if (v && !v.marked())
-        v.mark();
-}
+const ClassInfo JSGlobalObject::s_info = { "GlobalObject", &Base::s_info, 0, ExecState::globalObjectTable, CREATE_METHOD_TABLE(JSGlobalObject) };
 
-static inline void markIfNeeded(const RefPtr<Structure>& s)
+const GlobalObjectMethodTable JSGlobalObject::s_globalObjectMethodTable = { &allowsAccessFrom, &supportsProfiling, &supportsRichSourceInfo, &shouldInterruptScript, &javaScriptExperimentsEnabled
+#if PLATFORM(IOS)
+    , &shouldInterruptScriptBeforeTimeout
+#endif
+};
+
+/* Source for JSGlobalObject.lut.h
+@begin globalObjectTable
+  parseInt              globalFuncParseInt              DontEnum|Function 2
+  parseFloat            globalFuncParseFloat            DontEnum|Function 1
+  isNaN                 globalFuncIsNaN                 DontEnum|Function 1
+  isFinite              globalFuncIsFinite              DontEnum|Function 1
+  escape                globalFuncEscape                DontEnum|Function 1
+  unescape              globalFuncUnescape              DontEnum|Function 1
+  decodeURI             globalFuncDecodeURI             DontEnum|Function 1
+  decodeURIComponent    globalFuncDecodeURIComponent    DontEnum|Function 1
+  encodeURI             globalFuncEncodeURI             DontEnum|Function 1
+  encodeURIComponent    globalFuncEncodeURIComponent    DontEnum|Function 1
+@end
+*/
+
+JSGlobalObject::JSGlobalObject(VM& vm, Structure* structure, const GlobalObjectMethodTable* globalObjectMethodTable)
+    : Base(vm, structure, 0)
+    , m_masqueradesAsUndefinedWatchpoint(adoptRef(new WatchpointSet(InitializedWatching)))
+    , m_havingABadTimeWatchpoint(adoptRef(new WatchpointSet(InitializedWatching)))
+    , m_weakRandom(Options::forceWeakRandomSeed() ? Options::forcedWeakRandomSeed() : static_cast<unsigned>(randomNumber() * (std::numeric_limits<unsigned>::max() + 1.0)))
+    , m_evalEnabled(true)
+    , m_globalObjectMethodTable(globalObjectMethodTable ? globalObjectMethodTable : &s_globalObjectMethodTable)
 {
-    if (s)
-        s->mark();
 }
 
 JSGlobalObject::~JSGlobalObject()
 {
-    ASSERT(JSLock::currentThreadIsHoldingLock());
+    if (m_debugger)
+        m_debugger->detach(this);
 
-    if (d()->debugger)
-        d()->debugger->detach(this);
+    if (LegacyProfiler* profiler = vm().enabledProfiler())
+        profiler->stopProfiling(this);
+}
 
-    Profiler** profiler = Profiler::enabledProfilerReference();
-    if (UNLIKELY(*profiler != 0)) {
-        (*profiler)->stopProfiling(globalExec(), UString());
-    }
+void JSGlobalObject::destroy(JSCell* cell)
+{
+    static_cast<JSGlobalObject*>(cell)->JSGlobalObject::~JSGlobalObject();
+}
 
-    d()->next->d()->prev = d()->prev;
-    d()->prev->d()->next = d()->next;
-    JSGlobalObject*& headObject = head();
-    if (headObject == this)
-        headObject = d()->next;
-    if (headObject == this)
-        headObject = 0;
-
-    HashSet<ProgramCodeBlock*>::const_iterator end = codeBlocks().end();
-    for (HashSet<ProgramCodeBlock*>::const_iterator it = codeBlocks().begin(); it != end; ++it)
-        (*it)->clearGlobalObject();
-        
-    RegisterFile& registerFile = globalData()->interpreter->registerFile();
-    if (registerFile.globalObject() == this) {
-        registerFile.setGlobalObject(0);
-        registerFile.setNumGlobals(0);
-    }
-    delete d();
+void JSGlobalObject::setGlobalThis(VM& vm, JSObject* globalThis)
+{ 
+    m_globalThis.set(vm, this, globalThis);
 }
 
 void JSGlobalObject::init(JSObject* thisValue)
 {
-    ASSERT(JSLock::currentThreadIsHoldingLock());
-
-    d()->globalData = Heap::heap(this)->globalData();
-    d()->globalScopeChain = ScopeChain(this, d()->globalData.get(), thisValue);
+    ASSERT(vm().apiLock().currentThreadIsHoldingLock());
 
-    JSGlobalObject::globalExec()->init(0, 0, d()->globalScopeChain.node(), CallFrame::noCaller(), 0, 0, 0);
+    setGlobalThis(vm(), thisValue);
+    JSGlobalObject::globalExec()->init(0, 0, this, CallFrame::noCaller(), 0, 0);
 
-    if (JSGlobalObject*& headObject = head()) {
-        d()->prev = headObject;
-        d()->next = headObject->d()->next;
-        headObject->d()->next->d()->prev = this;
-        headObject->d()->next = this;
-    } else
-        headObject = d()->next = d()->prev = this;
-
-    d()->recursion = 0;
-    d()->debugger = 0;
-
-    d()->profileGroup = 0;
+    m_debugger = 0;
 
     reset(prototype());
 }
 
-void JSGlobalObject::put(ExecState* exec, const Identifier& propertyName, JSValuePtr value, PutPropertySlot& slot)
+void JSGlobalObject::put(JSCell* cell, ExecState* exec, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
 {
-    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(this));
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell);
+    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(thisObject));
 
-    if (symbolTablePut(propertyName, value))
+    if (symbolTablePut(thisObject, exec, propertyName, value, slot.isStrictMode()))
         return;
-    JSVariableObject::put(exec, propertyName, value, slot);
+    Base::put(thisObject, exec, propertyName, value, slot);
 }
 
-void JSGlobalObject::putWithAttributes(ExecState* exec, const Identifier& propertyName, JSValuePtr value, unsigned attributes)
+void JSGlobalObject::putDirectVirtual(JSObject* object, ExecState* exec, PropertyName propertyName, JSValue value, unsigned attributes)
 {
-    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(this));
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object);
+    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(thisObject));
 
-    if (symbolTablePutWithAttributes(propertyName, value, attributes))
+    if (symbolTablePutWithAttributes(thisObject, exec->vm(), propertyName, value, attributes))
         return;
 
-    JSValuePtr valueBefore = getDirect(propertyName);
+    JSValue valueBefore = thisObject->getDirect(exec->vm(), propertyName);
     PutPropertySlot slot;
-    JSVariableObject::put(exec, propertyName, value, slot);
+    Base::put(thisObject, exec, propertyName, value, slot);
     if (!valueBefore) {
-        JSValuePtr valueAfter = getDirect(propertyName);
+        JSValue valueAfter = thisObject->getDirect(exec->vm(), propertyName);
         if (valueAfter)
-            putDirect(propertyName, valueAfter, attributes);
+            JSObject::putDirectVirtual(thisObject, exec, propertyName, valueAfter, attributes);
     }
 }
 
-void JSGlobalObject::defineGetter(ExecState* exec, const Identifier& propertyName, JSObject* getterFunc)
+bool JSGlobalObject::defineOwnProperty(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor, bool shouldThrow)
 {
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object);
     PropertySlot slot;
-    if (!symbolTableGet(propertyName, slot))
-        JSVariableObject::defineGetter(exec, propertyName, getterFunc);
+    // silently ignore attempts to add accessors aliasing vars.
+    if (descriptor.isAccessorDescriptor() && symbolTableGet(thisObject, propertyName, slot))
+        return false;
+    return Base::defineOwnProperty(thisObject, exec, propertyName, descriptor, shouldThrow);
 }
 
-void JSGlobalObject::defineSetter(ExecState* exec, const Identifier& propertyName, JSObject* setterFunc)
-{
-    PropertySlot slot;
-    if (!symbolTableGet(propertyName, slot))
-        JSVariableObject::defineSetter(exec, propertyName, setterFunc);
-}
 
 static inline JSObject* lastInPrototypeChain(JSObject* object)
 {
@@ -195,266 +197,450 @@ static inline JSObject* lastInPrototypeChain(JSObject* object)
     return o;
 }
 
-void JSGlobalObject::reset(JSValuePtr prototype)
+void JSGlobalObject::reset(JSValue prototype)
 {
     ExecState* exec = JSGlobalObject::globalExec();
 
-    // Prototypes
+    m_functionPrototype.set(exec->vm(), this, FunctionPrototype::create(exec, this, FunctionPrototype::createStructure(exec->vm(), this, jsNull()))); // The real prototype will be set once ObjectPrototype is created.
+    m_functionStructure.set(exec->vm(), this, JSFunction::createStructure(exec->vm(), this, m_functionPrototype.get()));
+    m_boundFunctionStructure.set(exec->vm(), this, JSBoundFunction::createStructure(exec->vm(), this, m_functionPrototype.get()));
+    m_namedFunctionStructure.set(exec->vm(), this, Structure::addPropertyTransition(exec->vm(), m_functionStructure.get(), exec->vm().propertyNames->name, DontDelete | ReadOnly | DontEnum, 0, m_functionNameOffset));
+    m_internalFunctionStructure.set(exec->vm(), this, InternalFunction::createStructure(exec->vm(), this, m_functionPrototype.get()));
+    JSFunction* callFunction = 0;
+    JSFunction* applyFunction = 0;
+    m_functionPrototype->addFunctionProperties(exec, this, &callFunction, &applyFunction);
+    m_callFunction.set(exec->vm(), this, callFunction);
+    m_applyFunction.set(exec->vm(), this, applyFunction);
+    m_objectPrototype.set(exec->vm(), this, ObjectPrototype::create(exec, this, ObjectPrototype::createStructure(exec->vm(), this, jsNull())));
+    GetterSetter* protoAccessor = GetterSetter::create(exec);
+    protoAccessor->setGetter(exec->vm(), JSFunction::create(exec, this, 0, String(), globalFuncProtoGetter));
+    protoAccessor->setSetter(exec->vm(), JSFunction::create(exec, this, 0, String(), globalFuncProtoSetter));
+    m_objectPrototype->putDirectAccessor(exec, exec->propertyNames().underscoreProto, protoAccessor, Accessor | DontEnum);
+    m_functionPrototype->structure()->setPrototypeWithoutTransition(exec->vm(), m_objectPrototype.get());
+
+    m_nameScopeStructure.set(exec->vm(), this, JSNameScope::createStructure(exec->vm(), this, jsNull()));
+    m_activationStructure.set(exec->vm(), this, JSActivation::createStructure(exec->vm(), this, jsNull()));
+    m_strictEvalActivationStructure.set(exec->vm(), this, StrictEvalActivation::createStructure(exec->vm(), this, jsNull()));
+    m_withScopeStructure.set(exec->vm(), this, JSWithScope::createStructure(exec->vm(), this, jsNull()));
+
+    m_nullPrototypeObjectStructure.set(exec->vm(), this, JSFinalObject::createStructure(vm(), this, jsNull(), JSFinalObject::defaultInlineCapacity()));
+
+    m_callbackFunctionStructure.set(exec->vm(), this, JSCallbackFunction::createStructure(exec->vm(), this, m_functionPrototype.get()));
+    m_argumentsStructure.set(exec->vm(), this, Arguments::createStructure(exec->vm(), this, m_objectPrototype.get()));
+    m_callbackConstructorStructure.set(exec->vm(), this, JSCallbackConstructor::createStructure(exec->vm(), this, m_objectPrototype.get()));
+    m_callbackObjectStructure.set(exec->vm(), this, JSCallbackObject<JSDestructibleObject>::createStructure(exec->vm(), this, m_objectPrototype.get()));
+#if JSC_OBJC_API_ENABLED
+    m_objcCallbackFunctionStructure.set(exec->vm(), this, ObjCCallbackFunction::createStructure(exec->vm(), this, m_functionPrototype.get()));
+    m_objcWrapperObjectStructure.set(exec->vm(), this, JSCallbackObject<JSAPIWrapperObject>::createStructure(exec->vm(), this, m_objectPrototype.get()));
+#endif
 
-    d()->functionPrototype = new (exec) FunctionPrototype(exec, FunctionPrototype::createStructure(jsNull())); // The real prototype will be set once ObjectPrototype is created.
-    d()->prototypeFunctionStructure = PrototypeFunction::createStructure(d()->functionPrototype);
-    d()->functionPrototype->addFunctionProperties(exec, d()->prototypeFunctionStructure.get());
-    d()->objectPrototype = new (exec) ObjectPrototype(exec, ObjectPrototype::createStructure(jsNull()), d()->prototypeFunctionStructure.get());
-    d()->functionPrototype->structure()->setPrototypeWithoutTransition(d()->objectPrototype);
+    m_arrayPrototype.set(exec->vm(), this, ArrayPrototype::create(exec, this, ArrayPrototype::createStructure(exec->vm(), this, m_objectPrototype.get())));
+    
+    m_originalArrayStructureForIndexingShape[UndecidedShape >> IndexingShapeShift].set(exec->vm(), this, JSArray::createStructure(exec->vm(), this, m_arrayPrototype.get(), ArrayWithUndecided));
+    m_originalArrayStructureForIndexingShape[Int32Shape >> IndexingShapeShift].set(exec->vm(), this, JSArray::createStructure(exec->vm(), this, m_arrayPrototype.get(), ArrayWithInt32));
+    m_originalArrayStructureForIndexingShape[DoubleShape >> IndexingShapeShift].set(exec->vm(), this, JSArray::createStructure(exec->vm(), this, m_arrayPrototype.get(), ArrayWithDouble));
+    m_originalArrayStructureForIndexingShape[ContiguousShape >> IndexingShapeShift].set(exec->vm(), this, JSArray::createStructure(exec->vm(), this, m_arrayPrototype.get(), ArrayWithContiguous));
+    m_originalArrayStructureForIndexingShape[ArrayStorageShape >> IndexingShapeShift].set(exec->vm(), this, JSArray::createStructure(exec->vm(), this, m_arrayPrototype.get(), ArrayWithArrayStorage));
+    m_originalArrayStructureForIndexingShape[SlowPutArrayStorageShape >> IndexingShapeShift].set(exec->vm(), this, JSArray::createStructure(exec->vm(), this, m_arrayPrototype.get(), ArrayWithSlowPutArrayStorage));
+    for (unsigned i = 0; i < NumberOfIndexingShapes; ++i)
+        m_arrayStructureForIndexingShapeDuringAllocation[i] = m_originalArrayStructureForIndexingShape[i];
+    
+    m_regExpMatchesArrayStructure.set(exec->vm(), this, RegExpMatchesArray::createStructure(exec->vm(), this, m_arrayPrototype.get()));
 
-    d()->emptyObjectStructure = d()->objectPrototype->inheritorID();
+    m_stringPrototype.set(exec->vm(), this, StringPrototype::create(exec, this, StringPrototype::createStructure(exec->vm(), this, m_objectPrototype.get())));
+    m_stringObjectStructure.set(exec->vm(), this, StringObject::createStructure(exec->vm(), this, m_stringPrototype.get()));
 
-    d()->functionStructure = JSFunction::createStructure(d()->functionPrototype);
-    d()->callbackFunctionStructure = JSCallbackFunction::createStructure(d()->functionPrototype);
-    d()->argumentsStructure = Arguments::createStructure(d()->objectPrototype);
-    d()->callbackConstructorStructure = JSCallbackConstructor::createStructure(d()->objectPrototype);
-    d()->callbackObjectStructure = JSCallbackObject<JSObject>::createStructure(d()->objectPrototype);
+    m_booleanPrototype.set(exec->vm(), this, BooleanPrototype::create(exec, this, BooleanPrototype::createStructure(exec->vm(), this, m_objectPrototype.get())));
+    m_booleanObjectStructure.set(exec->vm(), this, BooleanObject::createStructure(exec->vm(), this, m_booleanPrototype.get()));
 
-    d()->arrayPrototype = new (exec) ArrayPrototype(ArrayPrototype::createStructure(d()->objectPrototype));
-    d()->arrayStructure = JSArray::createStructure(d()->arrayPrototype);
-    d()->regExpMatchesArrayStructure = RegExpMatchesArray::createStructure(d()->arrayPrototype);
+    m_numberPrototype.set(exec->vm(), this, NumberPrototype::create(exec, this, NumberPrototype::createStructure(exec->vm(), this, m_objectPrototype.get())));
+    m_numberObjectStructure.set(exec->vm(), this, NumberObject::createStructure(exec->vm(), this, m_numberPrototype.get()));
 
-    d()->stringPrototype = new (exec) StringPrototype(exec, StringPrototype::createStructure(d()->objectPrototype));
-    d()->stringObjectStructure = StringObject::createStructure(d()->stringPrototype);
+    m_datePrototype.set(exec->vm(), this, DatePrototype::create(exec, this, DatePrototype::createStructure(exec->vm(), this, m_objectPrototype.get())));
+    m_dateStructure.set(exec->vm(), this, DateInstance::createStructure(exec->vm(), this, m_datePrototype.get()));
 
-    d()->booleanPrototype = new (exec) BooleanPrototype(exec, BooleanPrototype::createStructure(d()->objectPrototype), d()->prototypeFunctionStructure.get());
-    d()->booleanObjectStructure = BooleanObject::createStructure(d()->booleanPrototype);
+    RegExp* emptyRegex = RegExp::create(exec->vm(), "", NoFlags);
+    
+    m_regExpPrototype.set(exec->vm(), this, RegExpPrototype::create(exec, this, RegExpPrototype::createStructure(exec->vm(), this, m_objectPrototype.get()), emptyRegex));
+    m_regExpStructure.set(exec->vm(), this, RegExpObject::createStructure(exec->vm(), this, m_regExpPrototype.get()));
 
-    d()->numberPrototype = new (exec) NumberPrototype(exec, NumberPrototype::createStructure(d()->objectPrototype), d()->prototypeFunctionStructure.get());
-    d()->numberObjectStructure = NumberObject::createStructure(d()->numberPrototype);
+    m_errorPrototype.set(exec->vm(), this, ErrorPrototype::create(exec, this, ErrorPrototype::createStructure(exec->vm(), this, m_objectPrototype.get())));
+    m_errorStructure.set(exec->vm(), this, ErrorInstance::createStructure(exec->vm(), this, m_errorPrototype.get()));
 
-    d()->datePrototype = new (exec) DatePrototype(exec, DatePrototype::createStructure(d()->objectPrototype));
-    d()->dateStructure = DateInstance::createStructure(d()->datePrototype);
+    // Constructors
 
-    d()->regExpPrototype = new (exec) RegExpPrototype(exec, RegExpPrototype::createStructure(d()->objectPrototype), d()->prototypeFunctionStructure.get());
-    d()->regExpStructure = RegExpObject::createStructure(d()->regExpPrototype);
+    JSCell* objectConstructor = ObjectConstructor::create(exec, this, ObjectConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_objectPrototype.get());
+    JSCell* functionConstructor = FunctionConstructor::create(exec, this, FunctionConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_functionPrototype.get());
+    JSCell* arrayConstructor = ArrayConstructor::create(exec, this, ArrayConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_arrayPrototype.get());
+    JSCell* stringConstructor = StringConstructor::create(exec, this, StringConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_stringPrototype.get());
+    JSCell* booleanConstructor = BooleanConstructor::create(exec, this, BooleanConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_booleanPrototype.get());
+    JSCell* numberConstructor = NumberConstructor::create(exec, this, NumberConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_numberPrototype.get());
+    JSCell* dateConstructor = DateConstructor::create(exec, this, DateConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_datePrototype.get());
+
+    m_regExpConstructor.set(exec->vm(), this, RegExpConstructor::create(exec, this, RegExpConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_regExpPrototype.get()));
+
+    m_errorConstructor.set(exec->vm(), this, ErrorConstructor::create(exec, this, ErrorConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_errorPrototype.get()));
+
+    Structure* nativeErrorPrototypeStructure = NativeErrorPrototype::createStructure(exec->vm(), this, m_errorPrototype.get());
+    Structure* nativeErrorStructure = NativeErrorConstructor::createStructure(exec->vm(), this, m_functionPrototype.get());
+    m_evalErrorConstructor.set(exec->vm(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("EvalError")));
+    m_rangeErrorConstructor.set(exec->vm(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("RangeError")));
+    m_referenceErrorConstructor.set(exec->vm(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("ReferenceError")));
+    m_syntaxErrorConstructor.set(exec->vm(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("SyntaxError")));
+    m_typeErrorConstructor.set(exec->vm(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("TypeError")));
+    m_URIErrorConstructor.set(exec->vm(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("URIError")));
+
+    m_objectPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, objectConstructor, DontEnum);
+    m_functionPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, functionConstructor, DontEnum);
+    m_arrayPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, arrayConstructor, DontEnum);
+    m_booleanPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, booleanConstructor, DontEnum);
+    m_stringPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, stringConstructor, DontEnum);
+    m_numberPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, numberConstructor, DontEnum);
+    m_datePrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, dateConstructor, DontEnum);
+    m_regExpPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, m_regExpConstructor.get(), DontEnum);
+    m_errorPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, m_errorConstructor.get(), DontEnum);
+
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().Object, objectConstructor, DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().Function, functionConstructor, DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().Array, arrayConstructor, DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().Boolean, booleanConstructor, DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().String, stringConstructor, DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().Number, numberConstructor, DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().Date, dateConstructor, DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().RegExp, m_regExpConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().Error, m_errorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().EvalError, m_evalErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().RangeError, m_rangeErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().ReferenceError, m_referenceErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().SyntaxError, m_syntaxErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().TypeError, m_typeErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().URIError, m_URIErrorConstructor.get(), DontEnum);
+
+    m_evalFunction.set(exec->vm(), this, JSFunction::create(exec, this, 1, exec->propertyNames().eval.string(), globalFuncEval));
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().eval, m_evalFunction.get(), DontEnum);
+
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().JSON, JSONObject::create(exec, this, JSONObject::createStructure(exec->vm(), this, m_objectPrototype.get())), DontEnum);
+    putDirectWithoutTransition(exec->vm(), exec->propertyNames().Math, MathObject::create(exec, this, MathObject::createStructure(exec->vm(), this, m_objectPrototype.get())), DontEnum);
 
-    ErrorPrototype* errorPrototype = new (exec) ErrorPrototype(exec, ErrorPrototype::createStructure(d()->objectPrototype), d()->prototypeFunctionStructure.get());
-    d()->errorStructure = ErrorInstance::createStructure(errorPrototype);
+    GlobalPropertyInfo staticGlobals[] = {
+        GlobalPropertyInfo(exec->propertyNames().NaN, jsNaN(), DontEnum | DontDelete | ReadOnly),
+        GlobalPropertyInfo(exec->propertyNames().Infinity, jsNumber(std::numeric_limits<double>::infinity()), DontEnum | DontDelete | ReadOnly),
+        GlobalPropertyInfo(exec->propertyNames().undefinedKeyword, jsUndefined(), DontEnum | DontDelete | ReadOnly)
+    };
+    addStaticGlobals(staticGlobals, WTF_ARRAY_LENGTH(staticGlobals));
+    
+    m_specialPointers[Special::CallFunction] = m_callFunction.get();
+    m_specialPointers[Special::ApplyFunction] = m_applyFunction.get();
+    m_specialPointers[Special::ObjectConstructor] = objectConstructor;
+    m_specialPointers[Special::ArrayConstructor] = arrayConstructor;
+
+    if (m_experimentsEnabled) {
+        NamePrototype* privateNamePrototype = NamePrototype::create(exec, NamePrototype::createStructure(exec->vm(), this, m_objectPrototype.get()));
+        m_privateNameStructure.set(exec->vm(), this, NameInstance::createStructure(exec->vm(), this, privateNamePrototype));
+
+        JSCell* privateNameConstructor = NameConstructor::create(exec, this, NameConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), privateNamePrototype);
+        privateNamePrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, privateNameConstructor, DontEnum);
+        putDirectWithoutTransition(exec->vm(), Identifier(exec, "Name"), privateNameConstructor, DontEnum);
+    }
 
-    RefPtr<Structure> nativeErrorPrototypeStructure = NativeErrorPrototype::createStructure(errorPrototype);
+    resetPrototype(exec->vm(), prototype);
+}
 
-    NativeErrorPrototype* evalErrorPrototype = new (exec) NativeErrorPrototype(exec, nativeErrorPrototypeStructure, "EvalError", "EvalError");
-    NativeErrorPrototype* rangeErrorPrototype = new (exec) NativeErrorPrototype(exec, nativeErrorPrototypeStructure, "RangeError", "RangeError");
-    NativeErrorPrototype* referenceErrorPrototype = new (exec) NativeErrorPrototype(exec, nativeErrorPrototypeStructure, "ReferenceError", "ReferenceError");
-    NativeErrorPrototype* syntaxErrorPrototype = new (exec) NativeErrorPrototype(exec, nativeErrorPrototypeStructure, "SyntaxError", "SyntaxError");
-    NativeErrorPrototype* typeErrorPrototype = new (exec) NativeErrorPrototype(exec, nativeErrorPrototypeStructure, "TypeError", "TypeError");
-    NativeErrorPrototype* URIErrorPrototype = new (exec) NativeErrorPrototype(exec, nativeErrorPrototypeStructure, "URIError", "URIError");
+// Private namespace for helpers for JSGlobalObject::haveABadTime()
+namespace {
 
-    // Constructors
+class ObjectsWithBrokenIndexingFinder : public MarkedBlock::VoidFunctor {
+public:
+    ObjectsWithBrokenIndexingFinder(MarkedArgumentBuffer&, JSGlobalObject*);
+    void operator()(JSCell*);
 
-    JSValuePtr objectConstructor = new (exec) ObjectConstructor(exec, ObjectConstructor::createStructure(d()->functionPrototype), d()->objectPrototype);
-    JSValuePtr functionConstructor = new (exec) FunctionConstructor(exec, FunctionConstructor::createStructure(d()->functionPrototype), d()->functionPrototype);
-    JSValuePtr arrayConstructor = new (exec) ArrayConstructor(exec, ArrayConstructor::createStructure(d()->functionPrototype), d()->arrayPrototype);
-    JSValuePtr stringConstructor = new (exec) StringConstructor(exec, StringConstructor::createStructure(d()->functionPrototype), d()->prototypeFunctionStructure.get(), d()->stringPrototype);
-    JSValuePtr booleanConstructor = new (exec) BooleanConstructor(exec, BooleanConstructor::createStructure(d()->functionPrototype), d()->booleanPrototype);
-    JSValuePtr numberConstructor = new (exec) NumberConstructor(exec, NumberConstructor::createStructure(d()->functionPrototype), d()->numberPrototype);
-    JSValuePtr dateConstructor = new (exec) DateConstructor(exec, DateConstructor::createStructure(d()->functionPrototype), d()->prototypeFunctionStructure.get(), d()->datePrototype);
-
-    d()->regExpConstructor = new (exec) RegExpConstructor(exec, RegExpConstructor::createStructure(d()->functionPrototype), d()->regExpPrototype);
-
-    d()->errorConstructor = new (exec) ErrorConstructor(exec, ErrorConstructor::createStructure(d()->functionPrototype), errorPrototype);
-
-    RefPtr<Structure> nativeErrorStructure = NativeErrorConstructor::createStructure(d()->functionPrototype);
-
-    d()->evalErrorConstructor = new (exec) NativeErrorConstructor(exec, nativeErrorStructure, evalErrorPrototype);
-    d()->rangeErrorConstructor = new (exec) NativeErrorConstructor(exec, nativeErrorStructure, rangeErrorPrototype);
-    d()->referenceErrorConstructor = new (exec) NativeErrorConstructor(exec, nativeErrorStructure, referenceErrorPrototype);
-    d()->syntaxErrorConstructor = new (exec) NativeErrorConstructor(exec, nativeErrorStructure, syntaxErrorPrototype);
-    d()->typeErrorConstructor = new (exec) NativeErrorConstructor(exec, nativeErrorStructure, typeErrorPrototype);
-    d()->URIErrorConstructor = new (exec) NativeErrorConstructor(exec, nativeErrorStructure, URIErrorPrototype);
-
-    d()->objectPrototype->putDirectWithoutTransition(exec->propertyNames().constructor, objectConstructor, DontEnum);
-    d()->functionPrototype->putDirectWithoutTransition(exec->propertyNames().constructor, functionConstructor, DontEnum);
-    d()->arrayPrototype->putDirectWithoutTransition(exec->propertyNames().constructor, arrayConstructor, DontEnum);
-    d()->booleanPrototype->putDirectWithoutTransition(exec->propertyNames().constructor, booleanConstructor, DontEnum);
-    d()->stringPrototype->putDirectWithoutTransition(exec->propertyNames().constructor, stringConstructor, DontEnum);
-    d()->numberPrototype->putDirectWithoutTransition(exec->propertyNames().constructor, numberConstructor, DontEnum);
-    d()->datePrototype->putDirectWithoutTransition(exec->propertyNames().constructor, dateConstructor, DontEnum);
-    d()->regExpPrototype->putDirectWithoutTransition(exec->propertyNames().constructor, d()->regExpConstructor, DontEnum);
-    errorPrototype->putDirectWithoutTransition(exec->propertyNames().constructor, d()->errorConstructor, DontEnum);
-
-    evalErrorPrototype->putDirect(exec->propertyNames().constructor, d()->evalErrorConstructor, DontEnum);
-    rangeErrorPrototype->putDirect(exec->propertyNames().constructor, d()->rangeErrorConstructor, DontEnum);
-    referenceErrorPrototype->putDirect(exec->propertyNames().constructor, d()->referenceErrorConstructor, DontEnum);
-    syntaxErrorPrototype->putDirect(exec->propertyNames().constructor, d()->syntaxErrorConstructor, DontEnum);
-    typeErrorPrototype->putDirect(exec->propertyNames().constructor, d()->typeErrorConstructor, DontEnum);
-    URIErrorPrototype->putDirect(exec->propertyNames().constructor, d()->URIErrorConstructor, DontEnum);
-
-    // Set global constructors
-
-    // FIXME: These properties could be handled by a static hash table.
-
-    putDirectWithoutTransition(Identifier(exec, "Object"), objectConstructor, DontEnum);
-    putDirectWithoutTransition(Identifier(exec, "Function"), functionConstructor, DontEnum);
-    putDirectWithoutTransition(Identifier(exec, "Array"), arrayConstructor, DontEnum);
-    putDirectWithoutTransition(Identifier(exec, "Boolean"), booleanConstructor, DontEnum);
-    putDirectWithoutTransition(Identifier(exec, "String"), stringConstructor, DontEnum);
-    putDirectWithoutTransition(Identifier(exec, "Number"), numberConstructor, DontEnum);
-    putDirectWithoutTransition(Identifier(exec, "Date"), dateConstructor, DontEnum);
-    putDirectWithoutTransition(Identifier(exec, "RegExp"), d()->regExpConstructor, DontEnum);
-    putDirectWithoutTransition(Identifier(exec, "Error"), d()->errorConstructor, DontEnum);
-    putDirectWithoutTransition(Identifier(exec, "EvalError"), d()->evalErrorConstructor);
-    putDirectWithoutTransition(Identifier(exec, "RangeError"), d()->rangeErrorConstructor);
-    putDirectWithoutTransition(Identifier(exec, "ReferenceError"), d()->referenceErrorConstructor);
-    putDirectWithoutTransition(Identifier(exec, "SyntaxError"), d()->syntaxErrorConstructor);
-    putDirectWithoutTransition(Identifier(exec, "TypeError"), d()->typeErrorConstructor);
-    putDirectWithoutTransition(Identifier(exec, "URIError"), d()->URIErrorConstructor);
-
-    // Set global values.
-    GlobalPropertyInfo staticGlobals[] = {
-        GlobalPropertyInfo(Identifier(exec, "Math"), new (exec) MathObject(exec, MathObject::createStructure(d()->objectPrototype)), DontEnum | DontDelete),
-        GlobalPropertyInfo(Identifier(exec, "NaN"), jsNaN(exec), DontEnum | DontDelete),
-        GlobalPropertyInfo(Identifier(exec, "Infinity"), jsNumber(exec, Inf), DontEnum | DontDelete),
-        GlobalPropertyInfo(Identifier(exec, "undefined"), jsUndefined(), DontEnum | DontDelete)
-    };
+private:
+    MarkedArgumentBuffer& m_foundObjects;
+    JSGlobalObject* m_globalObject;
+};
 
-    addStaticGlobals(staticGlobals, sizeof(staticGlobals) / sizeof(GlobalPropertyInfo));
-
-    // Set global functions.
-
-    d()->evalFunction = new (exec) GlobalEvalFunction(exec, GlobalEvalFunction::createStructure(d()->functionPrototype), 1, exec->propertyNames().eval, globalFuncEval, this);
-    putDirectFunctionWithoutTransition(exec, d()->evalFunction, DontEnum);
-    putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, d()->prototypeFunctionStructure.get(), 2, Identifier(exec, "parseInt"), globalFuncParseInt), DontEnum);
-    putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "parseFloat"), globalFuncParseFloat), DontEnum);
-    putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "isNaN"), globalFuncIsNaN), DontEnum);
-    putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "isFinite"), globalFuncIsFinite), DontEnum);
-    putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "escape"), globalFuncEscape), DontEnum);
-    putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "unescape"), globalFuncUnescape), DontEnum);
-    putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "decodeURI"), globalFuncDecodeURI), DontEnum);
-    putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "decodeURIComponent"), globalFuncDecodeURIComponent), DontEnum);
-    putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "encodeURI"), globalFuncEncodeURI), DontEnum);
-    putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "encodeURIComponent"), globalFuncEncodeURIComponent), DontEnum);
-#ifndef NDEBUG
-    putDirectFunctionWithoutTransition(exec, new (exec) PrototypeFunction(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "jscprint"), globalFuncJSCPrint), DontEnum);
-#endif
+ObjectsWithBrokenIndexingFinder::ObjectsWithBrokenIndexingFinder(
+    MarkedArgumentBuffer& foundObjects, JSGlobalObject* globalObject)
+    : m_foundObjects(foundObjects)
+    , m_globalObject(globalObject)
+{
+}
 
-    resetPrototype(prototype);
+inline bool hasBrokenIndexing(JSObject* object)
+{
+    // This will change if we have more indexing types.
+    IndexingType type = object->structure()->indexingType();
+    // This could be made obviously more efficient, but isn't made so right now, because
+    // we expect this to be an unlikely slow path anyway.
+    return hasUndecided(type) || hasInt32(type) || hasDouble(type) || hasContiguous(type) || hasFastArrayStorage(type);
 }
 
-// Set prototype, and also insert the object prototype at the end of the chain.
-void JSGlobalObject::resetPrototype(JSValuePtr prototype)
+void ObjectsWithBrokenIndexingFinder::operator()(JSCell* cell)
 {
-    setPrototype(prototype);
-    lastInPrototypeChain(this)->setPrototype(d()->objectPrototype);
+    if (!cell->isObject())
+        return;
+    
+    JSObject* object = asObject(cell);
+
+    // Run this filter first, since it's cheap, and ought to filter out a lot of objects.
+    if (!hasBrokenIndexing(object))
+        return;
+    
+    // We only want to have a bad time in the affected global object, not in the entire
+    // VM. But we have to be careful, since there may be objects that claim to belong to
+    // a different global object that have prototypes from our global object.
+    bool foundGlobalObject = false;
+    for (JSObject* current = object; ;) {
+        if (current->globalObject() == m_globalObject) {
+            foundGlobalObject = true;
+            break;
+        }
+        
+        JSValue prototypeValue = current->prototype();
+        if (prototypeValue.isNull())
+            break;
+        current = asObject(prototypeValue);
+    }
+    if (!foundGlobalObject)
+        return;
+    
+    m_foundObjects.append(object);
 }
 
-void JSGlobalObject::setTimeoutTime(unsigned timeoutTime)
+} // end private namespace for helpers for JSGlobalObject::haveABadTime()
+
+void JSGlobalObject::haveABadTime(VM& vm)
 {
-    globalData()->interpreter->setTimeoutTime(timeoutTime);
+    ASSERT(&vm == &this->vm());
+    
+    if (isHavingABadTime())
+        return;
+    
+    // Make sure that all allocations or indexed storage transitions that are inlining
+    // the assumption that it's safe to transition to a non-SlowPut array storage don't
+    // do so anymore.
+    m_havingABadTimeWatchpoint->notifyWrite();
+    ASSERT(isHavingABadTime()); // The watchpoint is what tells us that we're having a bad time.
+    
+    // Make sure that all JSArray allocations that load the appropriate structure from
+    // this object now load a structure that uses SlowPut.
+    for (unsigned i = 0; i < NumberOfIndexingShapes; ++i)
+        m_arrayStructureForIndexingShapeDuringAllocation[i].set(vm, this, originalArrayStructureForIndexingType(ArrayWithSlowPutArrayStorage));
+    
+    // Make sure that all objects that have indexed storage switch to the slow kind of
+    // indexed storage.
+    MarkedArgumentBuffer foundObjects; // Use MarkedArgumentBuffer because switchToSlowPutArrayStorage() may GC.
+    ObjectsWithBrokenIndexingFinder finder(foundObjects, this);
+    vm.heap.objectSpace().forEachLiveCell(finder);
+    while (!foundObjects.isEmpty()) {
+        JSObject* object = asObject(foundObjects.last());
+        foundObjects.removeLast();
+        ASSERT(hasBrokenIndexing(object));
+        object->switchToSlowPutArrayStorage(vm);
+    }
 }
 
-void JSGlobalObject::startTimeoutCheck()
+bool JSGlobalObject::arrayPrototypeChainIsSane()
 {
-    globalData()->interpreter->startTimeoutCheck();
+    return !hasIndexedProperties(m_arrayPrototype->structure()->indexingType())
+        && m_arrayPrototype->prototype() == m_objectPrototype.get()
+        && !hasIndexedProperties(m_objectPrototype->structure()->indexingType())
+        && m_objectPrototype->prototype().isNull();
 }
 
-void JSGlobalObject::stopTimeoutCheck()
+void JSGlobalObject::createThrowTypeError(ExecState* exec)
 {
-    globalData()->interpreter->stopTimeoutCheck();
+    JSFunction* thrower = JSFunction::create(exec, this, 0, String(), globalFuncThrowTypeError);
+    GetterSetter* getterSetter = GetterSetter::create(exec);
+    getterSetter->setGetter(exec->vm(), thrower);
+    getterSetter->setSetter(exec->vm(), thrower);
+    m_throwTypeErrorGetterSetter.set(exec->vm(), this, getterSetter);
 }
 
-void JSGlobalObject::mark()
+// Set prototype, and also insert the object prototype at the end of the chain.
+void JSGlobalObject::resetPrototype(VM& vm, JSValue prototype)
 {
-    JSVariableObject::mark();
-    
-    HashSet<ProgramCodeBlock*>::const_iterator end = codeBlocks().end();
-    for (HashSet<ProgramCodeBlock*>::const_iterator it = codeBlocks().begin(); it != end; ++it)
-        (*it)->mark();
-
-    RegisterFile& registerFile = globalData()->interpreter->registerFile();
-    if (registerFile.globalObject() == this)
-        registerFile.markGlobals(&globalData()->heap);
-
-    markIfNeeded(d()->regExpConstructor);
-    markIfNeeded(d()->errorConstructor);
-    markIfNeeded(d()->evalErrorConstructor);
-    markIfNeeded(d()->rangeErrorConstructor);
-    markIfNeeded(d()->referenceErrorConstructor);
-    markIfNeeded(d()->syntaxErrorConstructor);
-    markIfNeeded(d()->typeErrorConstructor);
-    markIfNeeded(d()->URIErrorConstructor);
-
-    markIfNeeded(d()->evalFunction);
-
-    markIfNeeded(d()->objectPrototype);
-    markIfNeeded(d()->functionPrototype);
-    markIfNeeded(d()->arrayPrototype);
-    markIfNeeded(d()->booleanPrototype);
-    markIfNeeded(d()->stringPrototype);
-    markIfNeeded(d()->numberPrototype);
-    markIfNeeded(d()->datePrototype);
-    markIfNeeded(d()->regExpPrototype);
-
-    markIfNeeded(d()->errorStructure);
-
-    // No need to mark the other structures, because their prototypes are all
-    // guaranteed to be referenced elsewhere.
-
-    Register* registerArray = d()->registerArray.get();
-    if (!registerArray)
-        return;
+    setPrototype(vm, prototype);
 
-    size_t size = d()->registerArraySize;
-    for (size_t i = 0; i < size; ++i) {
-        Register& r = registerArray[i];
-        if (!r.marked())
-            r.mark();
-    }
+    JSObject* oldLastInPrototypeChain = lastInPrototypeChain(this);
+    JSObject* objectPrototype = m_objectPrototype.get();
+    if (oldLastInPrototypeChain != objectPrototype)
+        oldLastInPrototypeChain->setPrototype(vm, objectPrototype);
 }
 
-ExecState* JSGlobalObject::globalExec()
+void JSGlobalObject::visitChildren(JSCell* cell, SlotVisitor& visitor)
+{ 
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell);
+    ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
+    COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
+    ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
+    Base::visitChildren(thisObject, visitor);
+
+    visitor.append(&thisObject->m_globalThis);
+
+    visitor.append(&thisObject->m_regExpConstructor);
+    visitor.append(&thisObject->m_errorConstructor);
+    visitor.append(&thisObject->m_evalErrorConstructor);
+    visitor.append(&thisObject->m_rangeErrorConstructor);
+    visitor.append(&thisObject->m_referenceErrorConstructor);
+    visitor.append(&thisObject->m_syntaxErrorConstructor);
+    visitor.append(&thisObject->m_typeErrorConstructor);
+    visitor.append(&thisObject->m_URIErrorConstructor);
+
+    visitor.append(&thisObject->m_evalFunction);
+    visitor.append(&thisObject->m_callFunction);
+    visitor.append(&thisObject->m_applyFunction);
+    visitor.append(&thisObject->m_throwTypeErrorGetterSetter);
+
+    visitor.append(&thisObject->m_objectPrototype);
+    visitor.append(&thisObject->m_functionPrototype);
+    visitor.append(&thisObject->m_arrayPrototype);
+    visitor.append(&thisObject->m_booleanPrototype);
+    visitor.append(&thisObject->m_stringPrototype);
+    visitor.append(&thisObject->m_numberPrototype);
+    visitor.append(&thisObject->m_datePrototype);
+    visitor.append(&thisObject->m_regExpPrototype);
+    visitor.append(&thisObject->m_errorPrototype);
+
+    visitor.append(&thisObject->m_withScopeStructure);
+    visitor.append(&thisObject->m_strictEvalActivationStructure);
+    visitor.append(&thisObject->m_activationStructure);
+    visitor.append(&thisObject->m_nameScopeStructure);
+    visitor.append(&thisObject->m_argumentsStructure);
+    for (unsigned i = 0; i < NumberOfIndexingShapes; ++i)
+        visitor.append(&thisObject->m_originalArrayStructureForIndexingShape[i]);
+    for (unsigned i = 0; i < NumberOfIndexingShapes; ++i)
+        visitor.append(&thisObject->m_arrayStructureForIndexingShapeDuringAllocation[i]);
+    visitor.append(&thisObject->m_booleanObjectStructure);
+    visitor.append(&thisObject->m_callbackConstructorStructure);
+    visitor.append(&thisObject->m_callbackFunctionStructure);
+    visitor.append(&thisObject->m_callbackObjectStructure);
+#if JSC_OBJC_API_ENABLED
+    visitor.append(&thisObject->m_objcCallbackFunctionStructure);
+    visitor.append(&thisObject->m_objcWrapperObjectStructure);
+#endif
+    visitor.append(&thisObject->m_dateStructure);
+    visitor.append(&thisObject->m_nullPrototypeObjectStructure);
+    visitor.append(&thisObject->m_errorStructure);
+    visitor.append(&thisObject->m_functionStructure);
+    visitor.append(&thisObject->m_boundFunctionStructure);
+    visitor.append(&thisObject->m_namedFunctionStructure);
+    visitor.append(&thisObject->m_numberObjectStructure);
+    visitor.append(&thisObject->m_privateNameStructure);
+    visitor.append(&thisObject->m_regExpMatchesArrayStructure);
+    visitor.append(&thisObject->m_regExpStructure);
+    visitor.append(&thisObject->m_stringObjectStructure);
+    visitor.append(&thisObject->m_internalFunctionStructure);
+}
+
+JSObject* JSGlobalObject::toThisObject(JSCell* cell, ExecState*)
 {
-    return CallFrame::create(d()->globalCallFrame + RegisterFile::CallFrameHeaderSize);
+    return jsCast<JSGlobalObject*>(cell)->globalThis();
 }
 
-bool JSGlobalObject::isDynamicScope() const
+ExecState* JSGlobalObject::globalExec()
 {
-    return true;
+    return CallFrame::create(m_globalCallFrame + JSStack::CallFrameHeaderSize);
 }
 
-void JSGlobalObject::copyGlobalsFrom(RegisterFile& registerFile)
+void JSGlobalObject::addStaticGlobals(GlobalPropertyInfo* globals, int count)
 {
-    ASSERT(!d()->registerArray);
-    ASSERT(!d()->registerArraySize);
+    addRegisters(count);
 
-    int numGlobals = registerFile.numGlobals();
-    if (!numGlobals) {
-        d()->registers = 0;
-        return;
+    for (int i = 0; i < count; ++i) {
+        GlobalPropertyInfo& global = globals[i];
+        ASSERT(global.attributes & DontDelete);
+        
+        int index = symbolTable()->size();
+        SymbolTableEntry newEntry(index, global.attributes);
+        symbolTable()->add(global.identifier.impl(), newEntry);
+        registerAt(index).set(vm(), this, global.value);
     }
-    
-    Register* registerArray = copyRegisterArray(registerFile.lastGlobal(), numGlobals);
-    setRegisters(registerArray + numGlobals, registerArray, numGlobals);
 }
 
-void JSGlobalObject::copyGlobalsTo(RegisterFile& registerFile)
+bool JSGlobalObject::getOwnPropertySlot(JSCell* cell, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
 {
-    JSGlobalObject* lastGlobalObject = registerFile.globalObject();
-    if (lastGlobalObject && lastGlobalObject != this)
-        lastGlobalObject->copyGlobalsFrom(registerFile);
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell);
+    if (getStaticFunctionSlot<Base>(exec, ExecState::globalObjectTable(exec), thisObject, propertyName, slot))
+        return true;
+    return symbolTableGet(thisObject, propertyName, slot);
+}
 
-    registerFile.setGlobalObject(this);
-    registerFile.setNumGlobals(symbolTable().size());
+bool JSGlobalObject::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor)
+{
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object);
+    if (getStaticFunctionDescriptor<Base>(exec, ExecState::globalObjectTable(exec), thisObject, propertyName, descriptor))
+        return true;
+    return symbolTableGet(thisObject, propertyName, descriptor);
+}
 
-    if (d()->registerArray) {
-        memcpy(registerFile.start() - d()->registerArraySize, d()->registerArray.get(), d()->registerArraySize * sizeof(Register));
-        setRegisters(registerFile.start(), 0, 0);
-    }
+void JSGlobalObject::clearRareData(JSCell* cell)
+{
+    jsCast<JSGlobalObject*>(cell)->m_rareData.clear();
 }
 
-void* JSGlobalObject::operator new(size_t size, JSGlobalData* globalData)
+DynamicGlobalObjectScope::DynamicGlobalObjectScope(VM& vm, JSGlobalObject* dynamicGlobalObject)
+    : m_dynamicGlobalObjectSlot(vm.dynamicGlobalObject)
+    , m_savedDynamicGlobalObject(m_dynamicGlobalObjectSlot)
 {
-#ifdef JAVASCRIPTCORE_BUILDING_ALL_IN_ONE_FILE
-    return globalData->heap.inlineAllocate(size);
-#else
-    return globalData->heap.allocate(size);
+    if (!m_dynamicGlobalObjectSlot) {
+#if ENABLE(ASSEMBLER)
+        if (ExecutableAllocator::underMemoryPressure())
+            vm.heap.deleteAllCompiledCode();
 #endif
+
+        m_dynamicGlobalObjectSlot = dynamicGlobalObject;
+
+        // Reset the date cache between JS invocations to force the VM
+        // to observe time zone changes.
+        vm.resetDateCache();
+    }
+    // Clear the exception stack between entries
+    vm.clearExceptionStack();
+}
+
+void slowValidateCell(JSGlobalObject* globalObject)
+{
+    RELEASE_ASSERT(globalObject->isGlobalObject());
+    ASSERT_GC_OBJECT_INHERITS(globalObject, &JSGlobalObject::s_info);
+}
+
+UnlinkedProgramCodeBlock* JSGlobalObject::createProgramCodeBlock(CallFrame* callFrame, ProgramExecutable* executable, JSObject** exception)
+{
+    ParserError error;
+    JSParserStrictness strictness = executable->isStrictMode() ? JSParseStrict : JSParseNormal;
+    DebuggerMode debuggerMode = hasDebugger() ? DebuggerOn : DebuggerOff;
+    ProfilerMode profilerMode = hasProfiler() ? ProfilerOn : ProfilerOff;
+    UnlinkedProgramCodeBlock* unlinkedCode = vm().codeCache()->getProgramCodeBlock(vm(), executable, executable->source(), strictness, debuggerMode, profilerMode, error);
+
+    if (hasDebugger())
+        debugger()->sourceParsed(callFrame, executable->source().provider(), error.m_line, error.m_message);
+
+    if (error.m_type != ParserError::ErrorNone) {
+        *exception = error.toErrorObject(this, executable->source());
+        return 0;
+    }
+    
+    return unlinkedCode;
+}
+
+UnlinkedEvalCodeBlock* JSGlobalObject::createEvalCodeBlock(CodeCache* cache, CallFrame* callFrame, JSScope* scope, EvalExecutable* executable, JSObject** exception)
+{
+    ParserError error;
+    JSParserStrictness strictness = executable->isStrictMode() ? JSParseStrict : JSParseNormal;
+    DebuggerMode debuggerMode = hasDebugger() ? DebuggerOn : DebuggerOff;
+    ProfilerMode profilerMode = hasProfiler() ? ProfilerOn : ProfilerOff;
+    UnlinkedEvalCodeBlock* unlinkedCode = cache->getEvalCodeBlock(vm(), scope, executable, executable->source(), strictness, debuggerMode, profilerMode, error);
+
+    if (hasDebugger())
+        debugger()->sourceParsed(callFrame, executable->source().provider(), error.m_line, error.m_message);
+
+    if (error.m_type != ParserError::ErrorNone) {
+        *exception = error.toErrorObject(this, executable->source());
+        return 0;
+    }
+
+    return unlinkedCode;
 }
 
 } // namespace JSC